Research on the Prediction Model of Shield Advancement Rate in Sandy Cobble Ground of Beijing

Table 6

Comparison of measured and predicted lines.

Date	Cumulative number (ring)	Day number (ring)	Max (mm/min)	Min (mm/min)	Mean (mm/min)	Std. dev.	Worktime (mm)
2018-01-06	89	3	82	1	51.36	12.21	90.80
2018-01-07	89	0	—	—	—	—	—
2018-01-08	98	9	83	1	63.63	16.26	215.00
2018-01-09	108	10	85	1	65.12	17.27	262.00
2018-01-10	115	7	85	1	65.76	13.83	175.30
2018-01-11	129	14	86	1	67.01	13.94	307.00
2018-01-12	144	15	85	1	62.29	15.79	380.70
2018-01-13	145	1	74	1	53.04	9.88	48.80
2018-01-14	146	1	91	1	33.07	26.44	19.30
2018-01-15	147	1	74	1	52.30	12.07	32.00
2018-01-16	151	4	80	1	48.23	16.60	128.70
2018-01-17	164	13	79	1	52.95	11.59	418.50
2018-01-18	177	13	79	1	54.10	11.71	346.80
2018-01-19	192	15	80	1	61.66	12.15	232.49
2018-01-20	209	17	85	1	69.25	14.77	390.65
2018-01-21	224	15	86	1	59.55	16.24	413.32
2018-01-22	242	18	83	1	56.53	11.27	477.15
2018-01-23	243	1	64	1	56.83	5.76	28.17
2018-01-24	243	0	—	—	—	—	—
2018-01-25	254	11			Abnormal data, remove
2018-01-26	264	10	75	1	47.30	14.59	133.33
2018-01-27	280	16	75	1	50.96	9.64	492.65
2018-01-28	295	15	78	1	50.09	9.50	474.81
2018-01-29	309	14	79	1	53.69	11.55	417.15
2018-01-30	327	18	83	1	56.76	12.31	501.15
2018-01-31	341	14	74	1	45.55	10.12	494.81
2018-02-01	351	10	78	1	52.45	8.45	325.49
2018-02-02	368	17	79	1	48.02	10.09	297.49